DIY Portable Power Box Solar Charge Upgrade

Recently I finished building my first portable power box in an “ammo can”, and have been charging phones and testing radios with it. However… now it’s time to top the battery off, so I’m upgrading the box with a charge controller, and external port to plug in a solar panel. Here’s the video tutorial I’m …

Calculating Power Ratios from Decibels

Decibels have never really made a lot of sense to me, though I memorized the relevant numbers to pass both my Technician and General class ham radio operator license tests. I mean, 3dB = 2:1, 6dB = 3:1 and 10dB = 10:1? What sense does that make? And its bothered me that I didn’t know …

WSPR: Weak Signal Propagation Path Reporting

WSPR (pronounced “whisper”) stands for “Weak Signal Propagation Reporter”. It is a protocol, implemented in a computer program, used for weak-signal radio communication between amateur radio operators. WSPR implements a protocol designed for probing potential propagation paths with low-power transmissions. Transmissions carry a station’s callsign, Maidenhead grid locator, and transmitter power in dBm. The program …

Morse Code – Letter Shape Learning System

Morse code is no longer required for an amateur radio ham license, but its still beneficial to learn. I found this neat system created by the fine people at Ham4All.com to teach the basics of Morse Code (Also referred to as CW or Constant Wave) in about an hour. The SHAPES of the letters are …

Ham Radio to Cell Phone Communications

Useful Email to SMS gateway information that lets you text phones using your ham radio. Video below demonstrates communications between Amateur radio equipment and cell phone equipment using email to text feature with Winlink.org’s Pactor HF email system. Checkout http://www.winlink.org for more information. Carrier Email to SMS Gateways Alltel – [10-digit-phone-number]@message.alltel.com AT&T – [10-digit-phone-number]@ tx.att.net …